Oil stove



Oct. l6721923.

1,470,738 R. HOFFMAN OIL STOVE Filed April 19. 1920 2 Sheets-Sheet 1SeWHH www* MINIMUM mmm , ,jf/a f/efzozf www @QW/wm @CL '16', 1923v1,470,738

A R. HOFFMAN OIL STCVE Filed April 19. 1920 Sheets-Sheet 2 Patented @et16, 1923.

oo., or .criterios Atiiiliii'ois, s oonroitnrioii or 'new Yonge.

` L'#YPIILBrevis. f QH y @pimentsiiieaiyirnie; ieee. learning. aviser; if y lj ,l

ToztZZwz/ome't may' concern." I .2 f y l. i

Be it known thatpl RUnoLr'ii HOFFMAN a citizen of the United which theollowiiigjs a Specification. i. "I

y vThe invention relates to oil-'stoves havingburners of theconstant-levelY type, inl which `i 10 the burner proper 'comprises aburner'boivfl n provided with raising :and lowering` nieansoperable tovary the position foftheburner with reference `vto certain ilevelv at.ywhich a supply of oil isinaii'itained, thek bowl bein'. connected vby asuitable pipe conne@y tion with a source. ofloil supply.

. The invention hask especialiefei'enceto.

V K r indictitedbiii Y p which the pipe connection between the bi'i'ro-v20 er bowl and thesour'c'e of oil .supply isof" suoli a` character 'pasto'fperinit of -theraising' oil stoves oi' the character kand 'loweringofthe burnerg"y andtaniiiif portant ob]ect of the invention :iszvto pro`Hiiiiniinuniqainount. of resistancetothejup Vand downkmoveinents`oftheburner.v

In `prior burners, ofthe"constant-level type, which have embodied. aflexible con-1A necltion between theburner vandithe source of oilsupply, the connectionsShave been inl the forni ofa flexiblegpipeextending ina A, generally horizontal direction'directlyroin 4the burnerbowl.. With this Varrangement it has been found that when the burner isfsuddenly lowered an objectionable flaring up of the Haine hasoccurred,yowingdto tho" vrush oit'oil under the actionj of gravity to the burnerbowl andjhence causing'the gen- 40 eration oan excessive amount ofvapor. {A n importantY object orq the 'present' inventionr is toovercoine this objection, andthis is accomplished by arrangingthe4 oilvconductof such means communicatingA with' the tial distance from theburner so as to eliini- V nate the action of gravity upon'the oilink aVmanner to cause an excessivetlow thereof 'to j a chimney 18.

mtheburner. r v

A furtherk object of `'the invention is to provide `a .connectionbetween .the burner bowl and. its source of Asupply in'which pro`nii-tors, Assioiioit froT sonerie,

ftates, residing' 1 at Kankakee, intheV county oiKanlr-aleeand iState ofIllinois, liavegiiiveiited certain vnew' and: useful ImprovementsinrrOil VVKStoves5 ot ference' tothe constant `oil level.'

fni'entary detail/vie'wbf a` flexibleL metallic" t vide an improvedforni of connection which 25 is of a flexible nature'and.whichioffersa4V well 16'V in' a well known inanner. burner .shallv depend verticallya substan`^ tiene vision isin'adei'for they collection oi'sediinent andthe `like so as 'to' Ainsurethey eiiicient 55`` operation( of theburner.l j f ,Y A, further *object ofthe invention is to provide improvedVmeans'forinoiinting the burner for up-'an'd-d'own movement. c, i pMStill another objectfor" the inventionfis -V to provide improvedIineens Vfor indicating'4 the properv position vof kthe 'burner with Intheacc'onipanyin'gl Vdra-wings, wherein l Y have illustrated ayypreferred forni -opinyf 6.5

invention,-Figure lis aside elevatioiipartially 1in section'rof theimprovedburner.'Y Fiom@ isa front elevation ofthe burner.

f Fig Slis air-fragmentary sectional]view, ,onfl

antenl'arged scale,- through the exible cori-79I nection" or conductorwhichl perniits of the vertical;inoveinents oithe burner with rei-`erence -to a fined source of' oil supply.` "Figi hose ieori'ning.'partv`ofthe flexible roilwconlv :i ductor I v ed, in"y the drawings@designates. generallyV one v of a series Iof burnerssupportedi'or- S0verticalmovenientfbeneath the top oi a `sto ve Aj andy vcoinprising yanyannular f' troughl or bowl 8. fFroni the bowl a tubularI stein 9V.dependsvinto operative relation with aV sup-1y 'port l0 ,embodying atubularfineinber or 85 By means ,of the device 12,the burner *is adapted,to be raised and lowered: withret` o5 A erence toa constantoilvlevel(Fig. l) which` ing means for the burner.; so that the portion isvmaintainedby the reservoir''fand its The burner 7 may beofany'wellknown or preferred construction,A coinprisingtlie 100 burnerbowl 8adapted to receivean Yannular ,lighting ring (notishown) andy to support"The-'s eni 9 which rdepends"'froinfth'e n trough 8 is rigidly seouredtothe trough'at* 105( sciistici; inn

Y j v110 Vwith `the top portion rof the-'bracket ist as to provide acommunication between the y trough and the source of on supply.

The

Y steni is mader of substantial lengtli'andfat its inverted-shapeiiaying `a `iront Wall a y provided with lears 22 by means `oiwhich. tno

' Trl-1e Vupper ends oi tlierarnis 26 Varelb vertical movement Withinthe suoiort OQ n i l f stein@ so as to ,guide the latter in its up a 15.i

A and'lowering device i2 'to coact Ywith Y sleeve 1l and tli-e stern'S,-tlie sleeve-Vis ent w I nallytlireadedas at 23am-d: the `s'teinisprowith sai-ol tia-'nge 27' and' at the-upper i lower end entersaffitti-ng arranged 'for The su port l() comprises a bracket oi C.

bracket is rigidly supportedupon a long '1... dinalfportion of the stoveframe 5.-.

meinber or Ysleeve ,l1 which is vertically disposed and adapted to'neatljyf l receive i" down movements.

For the ur ose or enablin-o` the raisin Y t .s

vided vwith a 'fixed' `collar 21'; Said dP Yl2 has an internallythreaded nieinbcrgoi nu f 25mg-aging with tliescreiv threads '23 and ins26 siiaped .at their upper ends to enga 'k i-tli havinga pair ofupstanding a ber 24 which at .its upper peripheral e provided withanannfularri-mf'or :flex

forni lingers 28 adapted Ato slid-'ably en a-eje triey arms, shoulders39 are ,provided to en# gage with the underside" of thecrnernberl 24.

' The nut 2 5." carries a plurality of 3f() (herein tliifeein Vninnberfeach vofi which ."'carry a radially extending lifand-le 3l. g will be.seen that bythe rotation o the*:nier-n#v ber or .nut-25 the raisingoplevering of the;

" burneris effected.

teo

each other ancllwith tbe-fitting 19. lt

.su'ch character as 'tofbe readilyv A.llieflexible pipe connectionbetween` f thelower end of the stem-9- t-liefeed.

.14 may comprise a nietallicconductor 82 consisting 'of plurality etrelativelyv movable n but .nons'lidable sections .f ranged two. seriesnear opposite endsyo theconductor, portions 34 the form olf rigid pfipesconnecting` sai-d 'series be obiious tliattlie Vtivo series of relati`mot/'able sections form in Teffect pai-r of Vbel-oW-sdiaphragms which'perniit the bendiingfof .the conductor A'revorsely adjacent its oppositeiend's in the up and down .movement ofthe :bur-ner. As Vs-liofivnin Fig.3 said foliaphragrns are formed' from sheetv vrne l ofi Y iizxi'ble.(lentrally of the diaphragms and' coaxially of the conductor areVprovided openings 35 by means of kwhich the diajplaragms. coin municatewith each other and with the connesting` portions 3.4 therebetween.'ifi-tone end said conductor entersfthe iittingilQ, an 1 end .portionjrto'f'gthe :conductor being i ably secured inV the fitting; and at theLotl end tliegconductori's secured uponV afittingry 14. thisilatlterlinstance the 'rearinost diaHVV rslidable4 portions rpro.f'f'd'ed with fpacking 38h between the sectionsq `tlie inner conductor. Y

,in any suitable Inannerfintlie s* inoval of sediment iron-1Y the p" andthe sump surround-ing tbe openn phragin section 33 isshaped to providean annular nipple 37 arranged to over lthe end of tbe 'itting 36thenipple being rigidly secured in place by suitable means as by soldering*Y l vThe iiexible connection 13 may also coinY o prise an innerconductor 38 .entered Within the conductor 32 and secured 'at itsoppositeY f ends inthe `fittings V1S) and 36. This inner conductor ispreferably formed from iexible ty of relat metallic tubingenibodying aplurali sections 38a having intertting tion of this inner conductor isto collection of sediment inftbe 'diapfli Wlnle permitting of tlie easyben/ling o tnc ,connection as va Wlrole,1otiering no in criar resistanceto the bending .ofthe outer conductorf32. @herinner-conductorWl le capable oit' use, especially in seine ins es in dependently 'ofthe outercon-ducten 'fi-s ,prei

erably useduin congunction with the latter which *forms an absolutelytight closure for it will be. see-n 'that the. construction providedforms a iflexible connection oi a highly eli' f y" bara/c yThe feed pipei4 isstationarily nroufnted e raino A and carriesupon its uppersiiilcftlie singsV 36 from W'lii'ch `.the flexible co nections yl'xleadto tlieseveral burners foil the steve.

As shown `in Fig. "35 tlieffit y may be mountedupon ltlie pipe 14 by fnipple 439l,screw-tbreaded into tbe pipe and' entered thro-ugh a seat orcupl member v ivbichlis provided 'its bottom with a pack- Washer 4luponnfliicliftlre lower end of kthe fitting`r 3:6 is adapted to rest.The fitting is clamped in position in fthe cup ineniber 40 by meanscomprising clamping member king-:tbe pipe :an-id a screw 43 en gagging'With Jehe ittingj and i 'th a anni; 44 engagingJ the fclanrpifng nie-ni42.

For the. purpose yof. i ng tbl between theleed pipe 14 i may 1 beprovided "a suitable pac Washer50.

For the ypurpose of indicating the 'variousV los operative andinoperative positions oi' the l burner, I provide an indicatorcompri-singe' pointer -51 carried by the Vitting '119 (Figs l i and 2)'and a scale formed on the tron-t ally 22 of therbracketjQO. v'Thepointerl .is

' by means Aof ascrew 53,-,a slot 54: being pro-` Y its Vrear edge theplate rmay be secured to f y i Y vary the height of the burner bowl,rmeans` vided in the wall V2l of the bracket to receive the boss., Thescale'uponl the wall 2l may consist of suitable [legends such asl CubaMednv the `flexible.,connectionsv 13, to Vprevent ,thek

accumulation thereon of dust and `dirt/which might interfere,V with thefree flexing .of the cured in position over-the diaphragms k13.

VVPreferably the plate extends throughout they length of the stove andhas/atv its forward end a downwardly 'extending flange 56 aper-v tui'edto receive theforward end portion 34 ofthe flexible conductor 32, andsecured at its Alower edge upon af portion of thejstove 'frame A whichcarries jtliefbraclretQO. At

.A the frame A in any'suitable way. p

lt will belseen tliatby reason of the" peculiar arrangement ofthevarious portions of the fuel conducting means, and especially'ofV thestem 9," the supply of oil4 tothe burner bowl 8 is effected in Nsuch amanner asfto4 maintainY the level of the oil constant, the ac-v tionofgravity upon the oil tending tocause an excessive flew when the burnerislowere'd,

Y and hence an abnormally great vaporization as Vthe oil strikes theheated burnerfbowl, beingyeliminated together with the resultingobjectionable flaring up of the flame.

Alt will be apparent that-"l haveproduced an oil stove which isof a verypractical Acharacter. The burner is advantageously supe provided betweenthe source of oil supply and the `burner is of such Va character as t0offer no material resistance to the up. and

down movements of the burner in a true vertical path, and are also of avery'last-ingand durable character. Provision is made for the removal ofsediment ifrom .the connecf tion between the source of oil supply andthe k(Si) burner. Y And nally, the arrangement of parts'is compachandunsightly parts are concealed from View. l

y It is to be understood that while the in-` vention is illustrated anddescribed with considerable particularity, it is, contemplated thatvarious changes be made in construction and arrangement withoutdeparting from the spirit and scope of they inven-` tion asf expressedVin the following claims;

I claim as my invention:

l. ln an oil stove, the combination with a source of oil supply and aburner mounted for 'vertical relative movement, ofmeans j providing aconnection between the oil supply and the burner adapted .to permitofsuch and .Lightfk stamped upon the forward face'of the wall 21.5"

' ofoil supply.

hollow conductor extendingA in argenerally l sections adapted to renderthe conductor ca'- Y ends so as to permit such relative vvertical' l'pable of flexing reverselyy near its opposite movement between theburner and the source 12.In astove oft the classdescribcdpthe.f

coi nbinat`ion with. a burner bowl having a'. Ydepending" oil supplykstem,` a supportunieans Vdiaphragms. Herein Vthis means isfin the.V

forniv of a sheetmetal "plate 55l suitably se# L lc'oactin'g withtliefsuppoi'tand thestemto var-y lthe .height ofpthe burnerl bowlgandwith a source of oil supply comprising a conductor flexible.

- '3. In "a stove of the class described, the *i vcombination witha'fburner bowl havinga` depending oil supply stem', fa support', Ymeansco'acti'ng withthe supportand the stem to connecting the lower end ofthestein with y .a Vsource of oil supply comprising an outer conductorconstructed so as toi render it said outer conductor andextendingthrouggh--fv "out the length thereof.

4. ln astove kof the yclass described, the combination `with a burnerbowl having an upright oil supply stem, means for supporting thebowl inVvarious', positionsof vertical adjustment,` and a connection betweentheylowerend-ofthe stem andthesource of oil .supply Vcomprisingany-outer flexible conductor. and Van innerf-llexible conduc-y tor, theouter. conductor comprising afplu-fv :'fleXible, and an inner flexiblemember within rality of sections fmovable but .non-slidyable withreference toV each other fand the inner conductor comprising apluralityof ksections movableand slidable with reference 1 .to each other. l n y'r 5. In a stove of the class describechithe combination with a vburnerbowl having tubular supply stein, means for raising and 6. In a stove ofthe class described,- tlie 2.

combination with a burner bowl having a for connectingythe supply stemto a source of oil supply comprising a conductor having tubular rsupplystem,` ofvmeans forraising 'Y and lowering the burner bowl, andVmeansloj ya plurality of diaphragm-like Vsectionsrelatively arranged soas to render the conductor readily flexible.

7'.' In anoil stove of the class described.

the combination .with an oil supply vpipe having a dependincr ting theremoval of sediment from the pipe comprising a sump provi-ded in saiddepend )ortion of means ermiting portion and having an openingin its1-(30 lower prton, and a plug adapted to be en- 't rough said openingand having serevf Headed engagement with the Wall of the sump oppositetheopenng #so nonmlly S. The Combination l'ing upright tubular stem`depending therefrom, a feed ppespacecl a Subst-anbel Vdstzmcefrom thelower end o the stem, and a Connection between =the feed Flfpeaml heclose the opening, Y u

o .a burner bowl lafwsiem zicludng a pluraltyofne atwfely mov-` ablerbutnon-sllrdable members folnomg'fa;

, exlble hollow7 member, and e lem'ble conf ing e.Y pluralsy of hollowmembers lle-ving flexible walls yrocmlfleced togeth'e'at their Cenf'tefsso as l-to Tende? the Ymemlsei-"S, relatively movable; y Y p Y.testimony 'wlleeofa l Lave 'hereunto set

